If you were cool you may never have become a librarian, we are never cool but we ARE completely awesome in many other ways!
Cool is by nature exclusionary – and the library is used largely (but not exclusively) by uncool kids – the geeks, outsiders and young people that want a place where their bullies may not think of looking for them. If you exude coolness it may scare them off as only cool kids mingle with cool people.
If you target the in crowd first you will limit the growth of the group to those that are in their favour and the library group may become just another clique where the outsiders are marginalised.
Be a geek, this is easy as almost everyone is a geek these days, be your natural slightly odd self – most of the best librarians I know and spend time with are painfully uncool in all the best ways; they are also magnificent when it comes to working with young people.
Eventually the library teens will accept you as one of their own and start trusting you and your suggestions on what to read and do!
Being uncool you will not be a threat to the cool kids and they will eventually take pity on you and talk to you. Once the first one starts talking the others will eventually come round and start engaging
One of the perks of being uncool is that kids will feel secure enough to laugh with you and, at times at you but you will be their librarian and they will trust you and love you for as long as you are there!
Once you have done this you will have started transcending the cool barrier, the kids you work with will eventually start saying that you are cool (it may take a year or so)but you must remind them that you are not cool – you are AWESOME – as is everybody that uses the library! When teens realise that they are awesome they will finally start realising that cool is not really that cool.